Apparatus

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sensors Mode-S transponder

A01CA5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N106SY · EMBRAER ERJ-170-200 (long wing) · operated by SKYWEST AIRLINES INC

Hex
A01CA5
Octal
50016245
Decimal
10,493,093
Country
US
Tail
N106SY
Type
E75L
Broadcasting now · callsign SKW5798 · 34,000 ft
Flights observed
614
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Current position

A01CA5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A01CA5 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
SKW5625 SkyWest Airlines 8 2026-07-24
SKW6027 SkyWest Airlines 7 2026-07-25
SKW5924 SkyWest Airlines 7 2026-07-25
SKW5354 SkyWest Airlines 7 2026-07-24
SKW5672 - 6 2026-07-06
SKW5533 - 6 2026-06-30
SKW5407 - 6 2026-06-25
SKW5304 - 6 2026-07-02
SKW6001 - 5 2026-07-13
SKW5901 - 5 2026-07-19
SKW5730 - 5 2026-07-11
SKW5631 SkyWest Airlines 5 2026-07-25
SKW5472 - 5 2026-06-16
SKW5451 - 5 2026-07-06
SKW5450 SkyWest Airlines 5 2026-05-10
SKW5434 - 5 2026-06-24
SKW5372 SkyWest Airlines 5 2026-05-16
SKW5281 - 5 2026-07-14
SKW4668 SkyWest Airlines 5 2026-07-24
SKW5999 - 4 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW565J ORD → CMX Jul 26, 21:00 UTCJul 26, 21:15 UTC15m
2026-07-26 SKW5531 ONT → SFO Jul 26, 18:50 UTCJul 26, 19:55 UTC1h 5m
2026-07-26 SKW5324 ASE → ORD Jul 26, 16:35 UTCJul 26, 17:15 UTC40m
2026-07-26 SKW5324 ASE → ORD Jul 26, 16:28 UTCJul 26, 17:43 UTC1h 15m
2026-07-26 SKW5895 SGF → DEN Jul 26, 11:10 UTCJul 26, 12:35 UTC1h 25m
2026-07-25 SKW5886 DEN → SGF Jul 25, 23:55 UTCJul 26, 01:15 UTC1h 20m
2026-07-25 SKW5788 ORD → LGA Jul 25, 22:10 UTCJul 25, 22:30 UTC20m
2026-07-25 SKW5788 ORD → LGA Jul 25, 21:36 UTCJul 25, 22:27 UTC51m
2026-07-25 SKW5789 RDU → IAH Jul 25, 19:50 UTCJul 25, 20:05 UTC15m
2026-07-25 SKW5463 RNO → SFO Jul 25, 17:00 UTCJul 25, 18:10 UTC1h 10m
2026-07-25 SKW4762 LGA → ORD Jul 25, 14:14 UTCJul 25, 15:19 UTC1h 5m
2026-07-25 SKW4762 LGA → ORD Jul 25, 14:15 UTCJul 25, 15:20 UTC1h 5m
2026-07-25 SKW5924 FCA → DEN Jul 25, 11:30 UTCJul 25, 13:00 UTC1h 30m
2026-07-25 SKW6027 SFO → BOI Jul 25, 04:50 UTCJul 25, 06:00 UTC1h 10m
2026-07-25 SKW6027 SFO → BOI Jul 25, 04:53 UTCJul 25, 05:58 UTC1h 5m
2026-07-25 SKW5631 SBP → SFO Jul 25, 02:35 UTCJul 25, 03:40 UTC1h 5m
2026-07-24 SKW5354 SFO → STS Jul 24, 23:10 UTCJul 25, 00:15 UTC1h 5m
2026-07-24 SKW5354 SFO → STS Jul 24, 23:08 UTCJul 25, 00:11 UTC1h 3m
2026-07-24 SKW5625 BFL → SFO Jul 24, 21:00 UTCJul 24, 21:50 UTC50m
2026-07-24 SKW4668 PHX → SFO Jul 24, 17:30 UTCJul 24, 19:40 UTC2h 10m
2026-07-24 SKW5898 SGF → DEN Jul 24, 14:15 UTCJul 24, 15:50 UTC1h 35m
2026-07-24 SKW5886 DEN → SGF Jul 24, 01:00 UTCJul 24, 02:15 UTC1h 15m
2026-07-23 SKW5673 ORD → MEM Jul 23, 23:15 UTCJul 23, 23:40 UTC25m
2026-07-23 SKW5616 ATL → ORD Jul 23, 19:40 UTCJul 23, 20:20 UTC40m
2026-07-23 SKW5288 - Jul 23, 17:00 UTCJul 23, 18:25 UTC1h 25m
2026-07-23 SKW4801 IND → ORD Jul 23, 14:15 UTCJul 23, 15:30 UTC1h 15m
2026-07-23 SKW5924 FCA → DEN Jul 23, 11:10 UTCJul 23, 12:35 UTC1h 25m
2026-07-23 SKW6027 SFO → BOI Jul 23, 05:10 UTCJul 23, 06:15 UTC1h 5m
2026-07-23 SKW5631 SBP → SFO Jul 23, 03:00 UTCJul 23, 04:10 UTC1h 10m
2026-07-22 SKW5354 SFO → STS Jul 22, 23:10 UTCJul 23, 00:10 UTC1h 0m
2026-07-22 SKW5354 SFO → STS Jul 22, 23:22 UTCJul 23, 00:15 UTC53m
2026-07-22 SKW5625 BFL → SFO Jul 22, 21:05 UTCJul 22, 21:55 UTC50m
2026-07-22 SKW4668 PHX → SFO Jul 22, 18:00 UTCJul 22, 20:05 UTC2h 5m
2026-07-22 SKW5558 SAV → DEN Jul 22, 14:15 UTCJul 22, 16:30 UTC2h 15m
2026-07-20 SKW5297 - Jul 20, 01:25 UTCJul 20, 03:35 UTC2h 10m
2026-07-19 SKW5376 ERI → ORD Jul 19, 21:25 UTCJul 19, 22:20 UTC55m
2026-07-19 SKW5692 CID → DEN Jul 19, 19:05 UTCJul 19, 20:20 UTC1h 15m
2026-07-19 SKW5901 ORF → ORD Jul 19, 15:55 UTCJul 19, 17:55 UTC2h 0m
2026-07-19 SKW5901 ORF → ORD Jul 19, 15:46 UTCJul 19, 17:37 UTC1h 51m
2026-07-19 SKW5477 ORD → ORF Jul 19, 12:45 UTCJul 19, 14:30 UTC1h 45m
2026-07-19 SKW5264 - Jul 19, 03:30 UTCJul 19, 04:20 UTC50m
2026-07-18 SKW5867 - Jul 18, 20:30 UTCJul 18, 21:20 UTC50m
2026-07-18 SKW5810 - Jul 18, 16:45 UTCJul 18, 18:30 UTC1h 45m
2026-07-18 SKW4755 DEN → ICT Jul 18, 03:35 UTCJul 18, 04:35 UTC1h 0m
2026-07-18 SKW4755 DEN → ICT Jul 18, 03:27 UTCJul 18, 04:34 UTC1h 7m
2026-07-18 SKW5503 - Jul 18, 00:35 UTCJul 18, 01:54 UTC1h 20m
2026-07-18 SKW5503 MCI → DEN Jul 18, 00:24 UTCJul 18, 01:56 UTC1h 32m
2026-07-17 SKW5385 DEN → SJC Jul 17, 21:50 UTCJul 17, 23:05 UTC1h 15m
2026-07-17 SKW5385 DEN → SJC Jul 17, 21:53 UTCJul 17, 23:02 UTC1h 9m
2026-07-17 SKW5972 - Jul 17, 18:44 UTCJul 17, 19:55 UTC1h 10m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N106SY page for operator, model, and routing details .

Mode-S A01CA5 frequently asked

What is Mode-S code A01CA5?
A01CA5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N106SY.
Where is Mode-S A01CA5 registered?
Mode-S code A01CA5 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A01CA5 broadcasting right now?
Yes. Mode-S A01CA5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A01CA5, octal 50016245, decimal 10,493,093.
What flights does A01CA5 operate?
Mode-S A01CA5 has broadcast 20 distinct callsigns, including SKW5625, SKW6027, SKW5924, SKW5354, SKW5672.